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Effects of hCG administration on different estrous cycle days on plasmatic progesterone concentration and uterine and ovarian blood flow in mares

Grant number: 10/10932-0
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): September 01, 2010
Effective date (End): August 31, 2012
Field of knowledge:Agronomical Sciences - Veterinary Medicine - Animal Reproduction
Principal researcher:Rubens Paes de Arruda
Grantee:Maria Augusta Alonso
Home Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade de São Paulo (USP). São Paulo , SP, Brazil


Aiming to increase pregnancy rates improving the corpusl luteum functionality, leading to an increase in plasmatic progesterone concentration in cyclic mares and recipient mares, some groups have focused research on the use of drugs, such as anti-prostaglandins, progesterone, hCG and GnRH analogs such as buserelin. This experiment aims to evaluate the effects of hCG application in 3 different times during the estrous cycle (pre ovulation, on the day of ovulation and five days post ovulation) on uterine and ovarian blood flow, uterine and cervical tone and utrine and corpus luteum morphoechogenicity and progesterone plasmatic concentration. Data will be submitted to variance analysis (PROC GLM), using SAS program (1999(. Hypothesis tested will be considered significant when P < 0.05.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ALONSO, MARIA AUGUSTA; SILVA, LUCIANO ANDRADE; AFFONSO, FERNANDA JORDAO; LEMES, KLEBER MENEGON; CARVALHO CELEGHINI, ENEIVA CARLA; LANCONI, RENATA; CARVALHO, HENRIQUE FULANETTI; DE ARRUDA, RUBENS PAES. Effect of hCG application at different moments of the estrous cycle on corpus luteum and uterine vascularization and serum progesterone concentration in mares. ANIMAL REPRODUCTION, v. 16, n. 2, p. 317-327, . (10/10932-0, 10/10692-9)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
ALONSO, Maria Augusta. Effect of hCG administration in different days of the estrous cycle on serum progesterone concentration and uterine and ovarian blood flow in mares. 2013. Doctoral Thesis - Universidade de São Paulo (USP). Faculdade de Medicina Veterinária e Zootecnia (FMVZ/SBD) São Paulo.

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